Search found 115 matches

by hp
Tue Apr 05, 2005 10:35 pm
Forum: General Discussion
Topic: connect keyboard to serial port
Replies: 18
Views: 3673

Re: connect keyboard to serial port

You won't be able to connect a USB Keyboard directly to a USB to Serial adapter. It would be very expensive if you wanted to take that route, because it would require a USB host chipset plus a bunch of other stuff to support the serial converter's propreitary communications protocol.<p>The best way ...
by hp
Sun Apr 03, 2005 9:59 pm
Forum: General Discussion
Topic: connect keyboard to serial port
Replies: 18
Views: 3673

Re: connect keyboard to serial port

Standard AT keyboards are self clocking. They automatically send out a clock and data stream every time you hit a key. The host can send commands to the keyboard (for the num lock, caps lock, and scroll lock leds) by doing something with the clock/data line and then sending a clock signal and a data...
by hp
Tue Mar 29, 2005 11:56 pm
Forum: General Discussion
Topic: stopping a screen saver with a PIC
Replies: 9
Views: 1635

Re: stopping a screen saver with a PIC

A simple java program using the java.awt.Robot class can move the mouse pointer. Windows will still interpret the move as a legal mouse move and will not allow a screen saver to kick in. A simple mouse move of 1 pixel should be sufficent.<p>The same approach was used on a server at school that would...
by hp
Tue Mar 08, 2005 11:33 pm
Forum: General Discussion
Topic: Time Lapse VR from PC
Replies: 5
Views: 900

Re: Time Lapse VR from PC

You will still need a capture card with a camera or a webcam. The PC would also have to be one that is at least a pentium due to the fact that most webcams and capture cards require usb or a pci slot.<p>There is alot of freeware software on the web that take snap shots in intervals that you can set....
by hp
Sun Feb 27, 2005 8:34 am
Forum: Computer Programming
Topic: VB Packaging
Replies: 7
Views: 3264

Re: VB Packaging

The re-distributable file list can be found in C:\Program Files\Microsoft Visual Studio\REDIST.TXT
by hp
Mon Jan 24, 2005 7:39 pm
Forum: Computer Programming
Topic: A pause in Visual Basic?
Replies: 4
Views: 2040

Re: A pause in Visual Basic?

Delaying a program is very simple.<p>Add the following in a module or at the top of your form code:<p>Declare Sub Sleep Lib "kernel32" (ByVal dwMilliseconds As Long)<p>Then call Sleep <milliseconds> everytime you want to delay the program.<p>Example: Sleep 1000 '1 sec delay<p>Harrison
by hp
Mon Jan 17, 2005 8:38 pm
Forum: General Discussion
Topic: Making hydrogen from water & DC
Replies: 208
Views: 40356

Re: Making hydrogen from water & DC

Wouldn't something of this magnitude be patented? Then again, some patented things are pretty stupid and not even worth looking at. But a patent would be more fun to look at then a bunch of non-sense text.
by hp
Sun Jan 16, 2005 7:09 am
Forum: General Discussion
Topic: Questions about making circuit boards
Replies: 15
Views: 2605

Re: Questions about making circuit boards

The cheapest service I have seen would be futurlec's (http://www.futurlec.com/PCBService.shtml). They used to only accept protel files but now they accept eagle and gerber formats.<p>Harrison<p>[ January 16, 2005: Message edited by: hp ]</p>
by hp
Sat Jan 15, 2005 7:36 am
Forum: Computer Programming
Topic: visual C
Replies: 14
Views: 5964

Re: visual C

I did not necessarily say that C# is a better choice than VB.net for rapid app developement. I just said that C# is a better choice for quick GUI design then visual C++ because the original topic was about visual C++ and C#.<p>Visual C++ is great for simple console based stuff. But it is just a pain...
by hp
Fri Jan 14, 2005 2:17 pm
Forum: Computer Programming
Topic: visual C
Replies: 14
Views: 5964

Re: visual C

If you like the vb style rapid app developement style interface then I would recommend c#. C# actually has a graphical form that you can draw controls on. Visual C++ does not.<p>So:
Visual C++ = Hard to implement GUI stuff
C# . net = Easy to do gui (vb style form design)<p>Harrison
by hp
Wed Jan 12, 2005 7:48 pm
Forum: General Discussion
Topic: Controlling a relay with a basic stamp
Replies: 12
Views: 1759

Re: Controlling a relay with a basic stamp

Are you sure your code for the basic stamp 2 is correct? What happens when you pull the transistor's base resistor to 5v? Does the relay stay on?<p>Solid state relays can only switch AC. If you want to switch the power supply's AC input then a solid state relay should be fine. It would also be quiet...
by hp
Mon Jan 10, 2005 5:51 pm
Forum: General Discussion
Topic: Controlling a relay with a basic stamp
Replies: 12
Views: 1759

Re: Controlling a relay with a basic stamp

It depends on what basic stamp you have. All the basic stamps other than the BS1 have native parallel lcd support.<p>Harrison
by hp
Tue Dec 28, 2004 4:12 pm
Forum: General Discussion
Topic: dsPic C Compiler?
Replies: 3
Views: 688

Re: dsPic C Compiler?

The Byte Factory's compilers are actually CCS's C compilers. You can buy the compilers directly from CCS at http://www.ccsinfo.com/ccscorder.shtml . The major problem with the CCS C compilers is that they regularly release bad and unstable versions. Luckily they give you a period of time to download...
by hp
Mon Dec 27, 2004 9:18 am
Forum: General Discussion
Topic: What's everyone working on?
Replies: 52
Views: 18703

Re: What's everyone working on?

I would recommend http://www.imageshack.us/ for photo storage. It is so easy that I use it instead of uploading images to my own website. Its a totally free service and there is no limit on how many images you may upload. You don't even have to sign up!<p>Harrison
by hp
Sat Dec 11, 2004 8:51 pm
Forum: General Discussion
Topic: Spy camera-wireless signal boosting.
Replies: 10
Views: 2042

Re: Spy camera-wireless signal boosting.

Do you have a license to operate such a setup legally? If not then don't bother with a wireless setup.<p>If you do have a license then you should be able to rig up a directional antenna on both ends. That should help the signal strength to your house.<p>Note about 'ebay' bought cameras: Most of the ...